package it.test.java.function;


import it.test.java.domain.ListNode;

/**
 * 合并链表：看不懂题目
 * @Copyright 纳新智能科技有限公司
 * @Author Liky
 * @Date 2023/2/14
 */
public class Solution2 {
    public ListNode mergeTwoLists(ListNode l1, ListNode l2) {
        if (l1 == null) {
            return l2;
        } else if (l2 == null) {
            return l1;
        } else if (l1.val < l2.val) {
            l1.next = mergeTwoLists(l1.next, l2);
            return l1;
        } else {
            l2.next = mergeTwoLists(l1, l2.next);
            return l2;
        }
    }
}
